diff --git a/SysBuild/kde/kdeedu b/SysBuild/kde/kdeedu
index b3bd578..a0fdd0c 100644
--- a/SysBuild/kde/kdeedu
+++ b/SysBuild/kde/kdeedu
@@ -101,6 +101,8 @@ mk32() {
 	for i in build.make link.txt relink.txt; do
 		find . -name "*$i" -exec sed -i "s/\/lib64/\/lib/g" {} \;
 	done
+	sed -i "s/$/-L \/usr\/X11R7\/lib -lGLU/" kalgebra/src/CMakeFiles/kalgebra.dir/link.txt
+	sed -i "s/$/-L \/usr\/X11R7\/lib -lGLU/" kalgebra/src/CMakeFiles/kalgebra.dir/relink.txt
 	make -j $NUMCPU
 	find . -name cmake_install.cmake -exec sed -i "s/\/lib64/\/lib/g" {} \;
 	make DESTDIR=$TMPROOT install
@@ -132,6 +134,8 @@ mk() {
 	      -DOPENGL_xmesa_INCLUDE_DIR=/usr/X11R7/include/GL \
 	      -DLIB_SUFFIX=${LIBSUFFIX}\
 	      .. &&
+	sed -i "s/$/-L \/usr\/X11R7\/$LIBDIR -lGLU/" kalgebra/src/CMakeFiles/kalgebra.dir/link.txt
+	sed -i "s/$/-L \/usr\/X11R7\/$LIBDIR -lGLU/" kalgebra/src/CMakeFiles/kalgebra.dir/relink.txt
 	make -j $NUMCPU
 	make DESTDIR=$TMPROOT install
 }